Add support for building cargo'ed Rust programs

1 files changed, 52 insertions, 0 deletions

diff --git a/pkgs/build-support/rust/default.nix b/pkgs/build-support/rust/default.nix
new file mode 100644
index 00000000000..a02163f73fa
--- /dev/null
+++ b/pkgs/build-support/rust/default.nix
@@ -0,0 +1,52 @@
+{ stdenv, cacert, git, rustc, cargo, rustRegistry }:
+{ name, src, depsSha256, buildInputs ? [], ... } @ args:
+
+let
+  fetchDeps = import ./fetchcargo.nix {
+    inherit stdenv cacert git rustc cargo rustRegistry;
+  };
+
+  cargoDeps = fetchDeps {
+    inherit name src;
+    sha256 = depsSha256;
+  };
+
+in stdenv.mkDerivation (args // {
+  inherit cargoDeps rustRegistry;
+
+  buildInputs = [ git cargo rustc ] ++ buildInputs;
+
+  configurePhase = args.configurePhase or "true";
+
+  postUnpack = ''
+    echo "Using rust registry from $rustRegistry"
+    (
+        cd $sourceRoot
+        ln -s $rustRegistry ./cargo-rust-registry
+        cargo clean
+        cargo fetch
+    )
+  '' + (args.postUnpack or "");
+
+  # TODO: Probably not the best way to do this, but it should work for now
+  prePatch = ''
+    for dir in ../deps/registry/src/*/pkg-config-*; do
+        [ -d "$dir" ] || continue
+
+        substituteInPlace "$dir/src/lib.rs" \
+            --replace '"/usr"' '"/nix/store/"'
+    done
+  '' + (args.prePatch or "");
+
+  buildPhase = args.buildPhase or ''
+    echo "Running cargo build"
+    cargo build --release
+  '';
+
+  installPhase = args.installPhase or ''
+    mkdir -p $out/bin
+    for f in $(find target/release -maxdepth 1 -type f); do
+      cp $f $out/bin
+    done;
+  '';
+})